Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/60—Power-operated mechanisms for wings using electrical actuators
  • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
  • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
  • E05F15/655—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings specially adapted for vehicle wings
  • E05F15/662—Motor units therefor, e.g. geared motors
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
  • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
  • B61D19/00—Door arrangements specially adapted for rail vehicles
  • B61D19/02—Door arrangements specially adapted for rail vehicles for carriages
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
  • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
  • E05F11/34—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with screw mechanisms
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/40—Safety devices, e.g. detection of obstructions or end positions
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
  • E05F15/00—Power-operated mechanisms for wings
  • E05F15/60—Power-operated mechanisms for wings using electrical actuators
  • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
  • E05F15/632—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings
  • E05F15/652—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for horizontally-sliding wings operated by screw-and-nut mechanisms
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/218—Holders
  • E05Y2201/22—Locks
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/218—Holders
  • E05Y2201/222—Stabilizers, e.g. anti-rattle devices
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/23—Actuation thereof
  • E05Y2201/232—Actuation thereof by automatically acting means
  • E05Y2201/234—Actuation thereof by automatically acting means direction dependent
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/23—Actuation thereof
  • E05Y2201/232—Actuation thereof by automatically acting means
  • E05Y2201/236—Actuation thereof by automatically acting means using force or torque
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
  • E05Y2201/23—Actuation thereof
  • E05Y2201/244—Actuation thereof by manual operation
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/40—Motors; Magnets; Springs; Weights; Accessories therefor
  • E05Y2201/43—Motors
  • E05Y2201/434—Electromotors; Details thereof
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/606—Accessories therefor
  • E05Y2201/608—Back-drive
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/64—Carriers
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/676—Transmission of human force
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/676—Transmission of human force
  • E05Y2201/68—Handles, cranks
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/696—Screw mechanisms
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2201/00—Constructional elements; Accessories therefor
  • E05Y2201/60—Suspension or transmission members; Accessories therefor
  • E05Y2201/622—Suspension or transmission members elements
  • E05Y2201/696—Screw mechanisms
  • E05Y2201/70—Nuts
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/30—Electronic control of motors
  • E05Y2400/3013—Electronic control of motors during manual wing operation
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/30—Electronic control of motors
  • E05Y2400/3013—Electronic control of motors during manual wing operation
  • E05Y2400/3017—Safety means therefor
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/32—Position control, detection or monitoring
  • E05Y2400/35—Position control, detection or monitoring related to specific positions
  • E05Y2400/354—End positions
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2400/00—Electronic control; Electrical power; Power supply; Power or signal transmission; User interfaces
  • E05Y2400/10—Electronic control
  • E05Y2400/50—Fault detection
  • E05Y2400/51—Fault detection of position, of back drive
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2600/00—Mounting or coupling arrangements for elements provided for in this subclass
  • E05Y2600/10—Adjustable
  • E05Y2600/12—Adjustable by manual operation
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/20—Combinations of elements
  • E05Y2800/246—Combinations of elements with at least one element being redundant
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/25—Emergency conditions
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
  • E05Y2800/25—Emergency conditions
  • E05Y2800/252—Emergency conditions the elements functioning only in case of emergency
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
  • E05Y2900/00—Application of doors, windows, wings or fittings thereof
  • E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
  • E05Y2900/51—Application of doors, windows, wings or fittings thereof for vehicles for railway cars or mass transit vehicles
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T74/00—Machine element or mechanism
  • Y10T74/19—Gearing
  • Y10T74/19949—Teeth
  • Y10T74/19953—Worm and helical

Definitions

• This invention relates generally to power drives for vehicular doors, and more specifically to drive systems employing rotary, helical drive members including primary and secondary mechanical door locks directly actuated by the helical drive.
• Rotary helical drives for vehicular doors are typically disclosed in U.S. Patents 5,077,938, and 3,745,705.
• the operators in these references employ rotary drives utilizing ball screw driven members or drive nuts and include various means of locking the asso ⁇ ciated vehicular doors.
• the invention disclosed herein features rela ⁇ tively simple lower cost primary and secondary locks directly driven by the rotating helical threaded drive member. Additionally, in the preferred embodiment, the invention disclosed herein is capable of supporting the driven door in addition to driving it from open to closed positions. While the rotary locks disclosed herein are shown in a configuration having direct door support, application of the lock to door systems utilizing sepa ⁇ rate door hangers is contemplated. Lock operation with or without a separate hanger is equivalent.
• the drive system of the invention disclosed utilizes a helically threaded cylindrical drive rod and a cooperating driven nut for reciprocally moving across threaded portions of the helical drive.
• Attached to the driven nut is a door hanger including bearing means coop- erating with the thread crests of the helical drive mem ⁇ ber so as to carry the driven door weight.
• Applicant's invention incorporates in part an improvement on the drive system disclosed in U. S. Patent No. 3,308,674.
• a particular feature of the operator is the use of zero pitch and negative pitch portions of the helical thread means located at the end of said threaded portion.
• the driven nut On entering the zero and negative pitch portions of the thread, the driven nut is essentially locked in a manner similar to that of over-center locks commonly utilized in mechanical linkages.
• An additional or secondary lock is provided by a rotating lock pawl on the end of the threaded or helical drive member, cooperating with a sector shaped latch on the driven nut.
• the combination is arranged such that in the negative pitch portion of the helical drive member, the lock pawl and sector latch or striker forming a redundant lock wherein any axial movement of the nut along the helical drive member is prevented by both.
• This combination provides both prima- ry and secondary locks operable by the rotary drive sys ⁇ tem.
• Auxiliary electrical control circuitry incorpo ⁇ rates counts indicative of rotary motion of the helical drive member and detection of the secondary lock posi ⁇ tions of the lock pawl and sector latch described above.
• the system provides indication of proper door locking and, in the alternative, indication of operator malfunc ⁇ tion or failure.
• Figure 1 is a partial section through a transit car utilizing the invention, particularly showing an inside view of vehicular doors, and the power door opera ⁇ tor of the invention in place on the vehicular doors.
• Figure 2 is a partial section along the line 2- 2 of Figure 1, particularly showing location of an emer- gency door opening actuator in a normal or una ⁇ tuated position.
• Figure 2A is a fragmentary view of a portion of Figure 2, particularly showing the emergency sector gear and rotating shaft cooperating with the ratchet assembly, shown in operation or door unlock position.
• Figure 2B is a fragmentary view of a portion of Figure 2, particularly showing the emergency door opening structure of the invention including a sector gear, coop ⁇ erating pinion, and ratchet assembly in an emergency or actuated position.
• Figure 2C is an additional fragmentary view of a portion of the emergency operating system of the inven ⁇ tion, particularly showing the sector gear and its asso ⁇ ciated emergency handle.
• Figure 3A is a partial section along the line
• sections of driven and assembly including shaft thrust bearing, shaft counter-gear, emer ⁇ gency actuator, and associated electromagnetic sensor.
• Figure 3B is a portion of the section of Figure 15 3A, however, limited to portions of the drive screw and door drive nut in location "B" of Figure 4.
• Figure 3C is an additional section similar to Figure 3B, however, showing the door drive screw, drive screw nut, and lock pawl in position "C" of Figure 4.
• Figure 3D is a section similar to Figure 3C, however, showing the door drive screw lock pawl and lock pawl latch or stop in fully locked position in location "D" of Figure 4.
• Figure 4 is a partial section of the driven end 25 of the invention along line 4-4 of Figure 3A, particular ⁇ ly showing sequential positions of the lock pawl in nor ⁇ mal rotation, approaching lock, and the fully locked position of the lock pawl and lock pawl stop or striker.
• Figure 5 is a sectional view along the line 5-5 30 of Figure 3A, particularly showing cam follower bearings as positioned in each end of the door drive nut.
• Figure 6 is an exploded partial view of the driven end of the door drive of the invention, particu- larly showing motion control and control elements of the invention.
• Figure 7 is a partial additional exploded view of the drive end portion of the operator of the inven- tion, particularly showing the drive motor, drive motor- screw drive shaft coupling and associated spherical bear ⁇ ing utilized in the car mounting bracket.
• Figure 8 is a section along the line 8-8 of Figure 7, particularly showing the cylindrical or needle bearing in its spherical mount. Also shown is a portion of the screw drive opposite that of Figure 5, and its door drive nut including the cam follower bearings inter ⁇ nal of the nut.
• Figure 9 is a section through line 9-9 of Fig- ure 8, particularly showing the resilient coupling and mating projections of the motor-drive screw shaft cou ⁇ pling.
• Figure 10 is a "typical" control system employ ⁇ ing the invention disclosed herein. DETAILED DESCRIPTION OF OPERATION
• FIG. 1 there is shown biparting sliding doors 2 driven by overhead power door operator assemblies 10 from open position 4 to closed position 2 and similarly from closed to open.
• the door drive includes a multiple pitch helical drive screw mem ⁇ ber 40 driven by an electric motor assembly 33 to provide door motion.
• Doors 2 are attached to helical drive 40 by a suitable door hanger assembly 31 ( Figure 2), attached to drive nut 52 and mounting tab 30.
• Figure 2 Although shown with individual operators per door, applicant submits that a to drive nut 52 and mounting tab 30.
• the drive motor end assembly 6 of drive screw 40 has a reduced diameter end 36 ( Figure 8) journaled in a spherical mount cylindrical roller self-aligning bear ⁇ ing 34 attached to the car structure 11 with bracket 38.
• Motor 33 is attached to the flange of the self-aligning bearing 34 by a flanged sleeve 39, and drives screw 40 through typical flexible coupling 37 of the Lovejoy® type.
• the self- aligning bearing 34 has the freedom of movement about the vertical axis and about the horizontal axis perpendicular to the axis of the drive screw.
• the opposite or driven end 8 of the drive screw 40 is journaled in a spherical mount self-aligning thrust bearing 41 (Reference Figure 3A) . Both bearings 41 and 34 are suitably fastened to the car structure 11 (by supports 35 and 38, respectively).
• the drive screw mem ⁇ ber 40 carries a drive nut assembly 52. With reference to Figure 3A, also attached to the driven end assembly 8 of the drive screw 40 is an extended portion 12 having reduced diameters.
• a toothed sprocket 14 Attached to the shaft portion 12, and fixed for rotary motion indicative of shaft rotation, and in sequential spacing from the rotary bearing journal, there are a toothed sprocket 14, a ratchet assembly 60, having an emergency release pinion gear 61, a ratchet pawl 62, a pawl spring 63, and a nut or stop fastener 13 mounted on the shaft end for maintaining location and spacing of the aforemen- tioned gears.
• the ratchet assembly is free to rotate relative to toothed sprocket with a sleeve bearing in be ⁇ tween.
• drive screw 40 is a rotating panel sensing and lock pawl
• a lock pawl stop or striker 23 Extending from the end face 53 of drive nut 52 and between the drive nut end 53 and the rotating lock pawl 22, is a lock pawl stop or striker 23.
• the rotating lock pawl 22 is essen ⁇ tially sector shaped as is the lock pawl stop 23, occupy ⁇ ing a portion of the 360 degree radial periphery of ei ⁇ ther the drive screw shaft 12 and nut face 53, respec- tively.
• lock pawl 22 and lock pawl stop 23 are an important por ⁇ tion of the invention disclosed herein in that as the rotating drive screw 40 moves drive nut 52 and its asso- ciated door hanger 30 to a point approaching the closed door location, positioning of the pawl stop 23 and rotat ⁇ ing pawl 22 is such that in the final closed and locked position discussed above, any translation of the drive nut in the door open direction, due to either failure of the nut, or other malfunction in the system would bring pawl 22 and stop 23 into engagement, preventing opening of the door.
• This configuration therefore, provides a positive lock operable only by rotation of the drive screw which maintains the door in its closed position. This lock provides additional redundancy in door locking, a highly desirable feature in operating transit car door equipment.
• a further enhancement of the positive lock described above is provided by a spring loaded plunger 24 passing through a portion of the pawl stop 23.
• the plunger is extended to position 26 (Reference Figure 3A) by presence of the rotating pawl 22 within the sector limits of the lock pawl stop 23 as shown in Figure 3D. Extension of the plunger 24, therefore, provides an indi- cation of the presence of the rotating pawl through coop ⁇ eration with electromagnetic pickup or presence sensor 27 eration with electromagnetic pickup or presence sensor 27 carried by a bracket 28 attached to the bearing mount as shown.
• a cam 29 Located on an extension of the bracket 28 is a cam 29. Since, due to the one-to-one relationship be ⁇ tween nut 52 location and rotation of drive shaft 40, it is possible to anticipate door location as a function of the shaft rotation. Rotation is determined by shaft angular position sprocket 14 through counting of electri- cal pulses due to the electromagnetic reluctance changes introduced in the drive screw rotation pickup or sensor 15 by the sprocket teeth peripheral to the shaft driven sprocket 14.
• the plunger 24 is carried by the drive nut 52 to which the door is attached, it is mandatory that the nut 52 and, in turn, the door panel, reaches fully door closed position before the plunger 24 can interact with the cam 22 which is secured to the drive screw and eventually picked up by the sensor 27 to indi- cate the door closed and locked signal. Without meeting the above condition in entirety, the door closed and locked signal cannot be generated.
• drive nut 52 incorporates a drive roller or pin 54 at one end.
• Drive pin 54 engages thread walls 45 in advancing drive nut 52 along drive shaft 40.
• drive nut ( Figures 5 and 8) incorporates load bearing cam followers 55 at each end thereof.
• Thread crests 44 and valleys 46 of the running portion of shaft 40 have a first pitch 42 for linear travel per turn of the drive screw 40 when rotating in direction 43 for door travel from open to closed.
• the running thread 42 extends from the threaded portion of the drive end 36 to a short transition portion having approximately zero lead.
• a negative or reverse lead or lock thread portion 50 of drive screw 40 then extends for approximately 90" rotation of the drive screw.
• Figure 1 is a partial sectional view looking outward from the inside of the car, whereas, the above mentioned Figures 3A, 3B, 3C, and 3D depict only the. right hand operator of Figure 1, as viewed from the driven end 8.
• the rotating lock pawl 22 is in the "A" position of Figure 4 approxi ⁇ mately 270' rotation from the fully locked position.
• rotation of the screw drive 40 has proceeded 90 * in direction 43 to the "B" position of Figure 4.
• Figure 3C rotation of screw drive 40 has advanced an additional 90 * and is shown on Figure 4 as location "C".
• a known difficulty in operating door equipment on modern transit vehicles arises through variation in car struc ⁇ ture dimensions due to normal tolerance variations in manufacture, and, in particular, car structure variations at the door operator mounting due to variations in struc ⁇ ture camber caused by passenger loading and unloading in normal day-to-day operation.
• an emergency release sector gear 19 (reference Figure 2B) .
• Operatively attached to sector gear 19 is emergency release handle 17.
• sector gear 19 is main ⁇ tained in the emergency position by toggle assembly 21.
• Toggle assembly 21 maintains the sector gear in either its inoperative or normal position (as shown in Figure 2) , or in an extended or emergency position to be subse ⁇ quently discussed.
• the positive lock portion 50 of the drive screw shaft 40 represents nominally 90' degrees rotation of the shaft, therefore, in order to manually unlock the door in the absence of drive screw power rotation, it is only necessary to rotate the drive screw shaft for approximately 90 * degrees in the opening direction. This is accomplished through manually moving handle 17, in a downward direction, thereby rotating sector gear 19 around its pivot 18 mounted on a bracket 5 in the direction shown, thereby engaging sector gear 19 and the emergency release pinion 61. Movement of the handle 17 to its emergency position rotates the drive screw shaft 40 out of the lock portions 50 and 51 of the drive screw thread (reference Figures 2 and 2B).
• Ratchet assembly 60 allows resetting of the emergency handle 17.
• Pinion 61 and spring loaded ratchet pawl 62 are a part of ratchet assembly 60.
• Pinion gear 61 is an integral part of the ratchet assembly 60.
• Ratchet assembly 60 is mounted on the sprocket 14 with a suitable bearing and is rotatable around sprocket 14. Sprocket 14 is secured to the drive screw reduced portion 12.
• the ratchet gear 64 is an integral part of the sprocket 14. Torque from the sector gear 19 is transmit ⁇ ted to the drive screw 40 in opening direction 66 through the pinion gear 61 and the ratchet assembly 60 in con ⁇ junction with spring loaded ratchet pawl 62 and ratchet gear 64.
• a controller 65 which may be of a type utilizing a microprocessor, programmable solid state logic, or relay logic, controls current to the drive motor 33.
• the drive motor 33 supplies torque to the helical drive member 40 or, as better shown by the drive end assembly 8, operate the doors in movement from open to closed.
• the microprocessor accepts inputs from the emergency actuator sensor 16, the door closed and lock sensor 27 operated by the rotating lock cam, and signals from the drive rotation counter assembly, i.e., sprocket 14 and sensor 15. Additional input representative of the drive motor current is also provided at the input of the controller 65 (Reference Figure 10).
• a proper number of counts from sensor 15 and indi ⁇ cation of closed and lock from sensor 27 indicate normal operation and do not result in an indication of malfun ⁇ - tion on indicator 67. Should either the helical drive counts or the lock indicator deviate from their predeter ⁇ mined pattern, indications of door operator malfunction are suitably shown in the malfunction indicator 67.
• a further action of the controller 65 involves the presence or lack of presence of the emergency lever 17 as indicated by sensor 16.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Power-Operated Mechanisms For Wings (AREA)
• Lock And Its Accessories (AREA)
• Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
• Spinning Or Twisting Of Yarns (AREA)
• Telephone Function (AREA)

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• 1992
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